Machine for trimming and finishing sewer-pipes and the like.



D. SCHULTZ.

MACHINE FOR TRIMMING AND FlNlSHING SEWER PIPE AND THE LIKE.

APPLICATION FILED JAN-28.1915.

Patented Dec. 11, 1917.

2 SHEETS-SHEET I.

WWII/E8858: A aT WMCW D. SCHULTZ. IIHICHIIIIE FOR TRIMI'I'IIIIG AND FINISHING SEWER PIPE AND THE LIKE.

APPLICATION FILED IAN- 23.1915- I Patented Dec. 11,1917.

2 SHEETS-SHEET 2.

W/T/I/ESSES:

HI same.timefor 'arenioving fins or lTNltil-lEW srnrns nitrnnrlonnion finmntscnntrz, or PUnBLo, meme."

i eiegseo.

of iPueblo *in the county of -Pueblo and "fiwstste of Colorado, have invented .ti certain new endnsefnl Machine for Trimming and-W; FinishingiSeWer-Pipes and the'likemf-tvhieh; the following is a full clear, andex'act description.

1O This invention is devicerior mechanically trimming and-finishingtiler sewerpipe or like earthenware manufactures and its-object i j i is :the provision oi a mechanism ifor quickly and accurately trimming; and finishing such ls-article's as they -comerfrom the n'lOldythuS avoiding a large" portion of the labor" of; per- YfOI'IHiILg this operation by hand and obviab ing the" irregularities landless 'of' product I: H incidental to handwworki Broadly speaking:

; -i P the;inventioiwcomprises'rwmeensdioli1 receiv 5 ished, means for first cuttingoif extra length l occurring atone end and inea ns then coming .into play for finishing-the article and at the; issue at theiotherendr it i lvainta ge's "of myjinvention willllateri appear! iii-thisspecifications i 1 x v ,30 Inthe two sheetsrof'drawingsaccompanying' this application and forming part wmihereof. y

chine; a portion of one of the side members i .of the frame-being broken iaW ay ito-disclo se w -hidden ar 1 i wS-Figa 2-:1s' enwenlerged detsil showing the l fin ci'1tting;knife, ithe bell "finishing means i and also illustratingthemztnner of detach- %ably connecting the shafts carrying the finishing'devicesfito the driving sprockets; '4 Fig.3 is a-nienlarged detail' in side eleven-n, 1e tion andvertical sect-ion, showing theresilinent co'nnection 'forxforcing the finishing vmeans-to'the Work; i

. 1 Fig.= l is a siinilz rly detail in side elevationshovvingthemountingoii the WE -Spigot end 'finishing- -mechanism ,and the qtriinniingmechanismwvhile -the-ilatteris in,

operative" position (in thisview,to aivoid L i eonfusion -:oflines, the finishing mechanism ihais heen shown' as lturned np vertically-ear po'sition it would not-oecupy i n practice dur- I;

n singktheienttingnoperation); and

: ig- -is= eerli gmmmatic View {showing 111g" anclv positioning the artieletoi be fini then-trimming:mechanism in three ofcits po- Be it known; that 1, DANIEL"SCHULTZ, 31, =citizen of the'United States, anda; resident sitions as viewedoi'rom thefront or bell end of-the .lnztchine. i

The entire mechi-ne is carried" on aesingle @fIEtHlU'A and a driving shtft 10, n1onnted in bearings l -l extends fromi'front to rear of the :Eranie. lhzwe shown wcrsink lfi for tujrning th e shaft 10 and I prefer toqe'niploy this actuating means es being bestsuited t0 the nature of thenvork to be performed,

though it will Joe-obvious that -i'f desired, power means Could be substituted therefor ism.

Without any "We-y departing fffOHl my inventionl; fFixed on lthedsheft 1 0 are front and rear sprockets 13, 14 on which: run chains 15,-l6'WhlCl1 also run on-the sprockets 17, 18-Whi0h are -rotetably-1nonntedl-on the short shsftsm191a-nd 20 respectively; the

shaftligmbeing the one which carriesthe fin pnissnepknifeQl and the bellnfinis'her 241 ovlnch, in the case of e sewer pipe finish the bell pert ofgthetpipe and the shaft QO carfrying; locked thereto by jnmb nuts-22 the arm 23 which is provided shits-outer eX- jtrernity withthefinishing tool 24:.

. pp Removably held in soekets 25 on thegnp p er i Othernnd more 'detailedobjects and adnembersof the fIaITlQ A are WOIk holding members 1 26?; wh ch i are adapted :to receive ished and to positioni-the a rticlewith reference to the tools. This positioning in the l l i 5 case of the seWer-pipe selected for illustra- Figure 1 perspective oftheentire mm tion Will {when the pipe is in final position, be performed bvtherear of the bell -13 n contacting Withthe front face of {the first Work I holding member 26 i i (which "positioning has not as yet-taken place in the illnstration in Fig, end by the feet that the oenters of the semi-circular concavities in the Work holding-members are in lineiwith the centers ofithe short shaftslQ, 20.

KVV-ith the exceptionof h the tendant pzirts .;is identicaL- :qEech 0i the sprocket Wheels 1?, 18 has lrigidly connected thereto e sleeve 28, -forn1ed with reduced {PQFlZlQIlSQQWVhiCh are adapted to run in the bearings 30 carried on the frame, encheach sleeve 1 is 1 provided with; p o=pp,osed,.- flaring mouthed notches- 31 adapted to engage and X receive pins 32; on the 'shziftsf 9, 720, which shafts arevfiree to slide Within sl ev 3 and whichjlallovv'said sleeves to .run free thereon except when the pins 32 are in engagement with the notches31.

. follows; Straddling each shaft there is a yoke the vertically slotted sides of which en is a compression spring 36 coiled around the- Means for imparting simultaneous longitudinal movement to the shafts 19, 20 toward and from the work areprovided as gage a pin 34 on a sleeve 35 slidably mounted on the shaft (see Fig. 3). On the side of thesleeve 35 which is toward the work there shaft and in engagement with the sleeve 35 and a washer 37, which washer is held firmly inpo'sition of the shaft as by a cotterpin 38 passing through the shaft. This connection ment ofthe yoke-in the direction away from theworkp The several yokes 33 are carried on front and rear arms'34, 35 which are respec- 'tively non-rotatably' mounted on shafts 36, 37 journaled in the frame." Means for r'otating-the shafts 36, 37 "simultaneously in] 'opp'osit'edirections are provided as follows: Between the shafts 36','37 is a shaft 38 carrying oppositelyextended arms 39, 40

which are 'connec'ted by links 41, 42 with s 35 ,theshafts 36. 37 A lever is so connectarms 43, 44 also non-rotatably mounted on ed to the shaft 38 thatdepressing said lever *willfthrough the train of mechanism described cause both yokes 33 to be swung in '40 1 a direction toward the work.

' As previously stated there'is a trimmer fcarrying arm rigidly carried by the sprocket wheel 18. Thisarm preferably comprises a "bent; member 27 secured'to the sprocket 18, 45

a slotted plate '46 adjustably secured thereto, a, rod 47 boltedto said plate and extending parallel to the axis of the shaft 20, a plate 48 pinned to the outer end of'saidrod and pro-- 1 'jectinglat right-angles thereto. ".The trim- V 50' ming blade 51 is secured to the plate 48 byally attached to the plate 48 by a pin 50,1

"The trimmer blade 51 is rigidly bolted to thei'member 49 andthe latter is so shaped being bolted to a member 49 which is pivotand proportioned as to have a limited swing mg movement" about, the pin 50 (see Fig. 5)

' f and to;swing 'of'itsown weight as soon as the parts .pass "the top of the revolutioir around the'a'xis" of the-shaft 20 and to remainout of line for approximately 270 de-' I grees of the revolution. After passing subs'tantiallythis point the tendency of the menhber49- is to fallto the position shown 1 in full lines in Fig. 5fand it is stoppedthere by-the 111 52* face of the front member 26.

Operation.

. ming knife which it carries are caused to revolve. At the starting of the operation the knife 51 is in about the position shown in 'Fig. 1,-.which is also substantially that shown at X in Fig.5. As the shaft 20 is rotated. and the trimming parts revolve these latter will pass the point where gravity will 'maintainthe member 49 an'dthe knife 51 in said position and they will fall into the position. shown in fulllines in Fig. 5.

- Then the. knife 51 will contact with the'pipe and will cut off the excess in length w iich is provided at the spigot end. The resistance exerted against the knife 51 by the clay of the pipe will, during the time it is cutting, prevent its fallinginto the positions shown in dotted lines in Fig. 5 and the knife will remain incuttin position during the entire revolution. After the cutting revolution is complete and the knife passes the highest point in itstravel it will again fall as shownat Y inFig. 5 and thus be out of the way; Iprefer, though this point is not essential to my invention, to proportion the sprocket wheels Hand 18 in 'theratio of 1 to 2 so that one revolution of the crank 12 will cause two revolutions of the sprocket 18 and the trimming mechanism. Then at the bottom of the turn 12 the cutting mechanism has made two complete revolutions and, havstartingposition. I then depress the lever '45 which will throw the yokes 33 toward the work which will cause the pins 32 to enter the wide mouthed notches 31 011 the sleeves 28 andfix' the sprockets to the shafts, and at the same time advance the finishers 24 and 24 and the finishing knife 21- to operative position. The pins 32 are so placed on the shaft 20 that the arm 23 will always clear the trimmingmechanism; however, on ac- "count of the weight of the finisher 24 and the arm 23 and the fact that during the cutting operation the shaft 20 is idle, it so happens that generally the finisher 24 does not revolve during such cutting or trimming operatioirbut hangs idly at the lower part of the circle and far enough toward the work to clear the arm 27 and the rod 47 (which latter is carried on a larger radius), Therefore in this preferred adjustment of parts,

when the lever 45 is depressed the finisher 24 passes just behind the member 49 and holds the knife 51 in the position shown at X in the sleeve 28 and the shaft 20) and the arm 23 be caught at 180 degrees from the cutting mechanism the knife 51 could dono harm in falling back to the full line position since it now clears the cut off pipe.

A turn now given the crank 12 will cause the finisher 24L to round off and finishthe spigot end of the pipe and at the same time the finisher 26F will act on the outer face of the bell and the knife 21 will trim off the fin or issue which is formed on the inner edge ofthe bell in the process of molding. The pipe is now completed and is removed and the operation repeated, the shafts 19 and 20 being retracted to initial position by the spring 53 which draws up the lever when it is released.

It is important that the knife 51 should begin its cutting action at substantially the point-indicated or at some analogous point for the following reason: Apart'of the pipe end above the center line thereof should be the last tob e severed to prevent a ragged break which would occur were all the upper part out first. When the cutting takes place as indicated contact will take place between the severed parts below the center line and brace the out off portion and the last portion to be reached will be in tension instead of subject to a bending moment-which latter would cause a ragged break and allow the parts of the pipe to separate much earlier than when out as described.

It will of course be obvious that the tools said arm about the work, and a blade pivotally mounted in said arm-in such position as to tend to fall away from the work for a 7 portion of the revolution of said arm.

2. In a device of the class described, a

knife carrying arm, means for revolving said arm about the work, and a blade pivotally mounted in said arm in such position as to tend to fall away from the work for a portion of the revolution of said arm and to witnesses.

fall toward the work after passing a substantial distance above the center of revolution during the upward movement of said arm.

3. In a device of the class described, a knife carrying arm, means for revolving said arm about the work, a blade pivotally mounted in said arm insuch position as to tend to fall away from the work for a portion of the revolution of said arm and to fall toward the work after passing a substantial distance above the center of revolution during the upward movement of said arm, and means for holding said blade in alinement when it meets with resistance from the work. i

4.. In a device ofthe class described, a

shaft, a driven sprocket wheel normally free on said shaft, a trimming tool carried by 7 said sprocket wheel, a finishing tool carried by said shaft, and means for advancing said shaft to the work and fixing said sprocket to said shaft.

5. In a deviceof the class described, a driving shaft, a pair of short shafts, a sprocket wheel on each short shaft and normally freet'o rotate thereon, means for driving said sprockets from said driving shaft, a trimming tool carried by one of said sprockets, a finishing tool carried by the short shaft on which said last mentioned sprocket is mounted, trimming tools carried by the remaining short shaft, and means for simultaneously shifting said short shafts to bring said finishing tools into operative relat-ion to the work and to fix the sprockets thereon.

6. In a device of the class described, a,

driving shaft, a pair of short shafts, a

sprocket wheel oneach short shaft and normallyfree to rotate thereon, means for driving said sprockets from said driving shaft, a trimming tool carried by one of said sprockets, a finishing tool carried by the short shaft on which said last mentioned sprocket is mounted, trimming tools carried by the remaining short shaft, and resilient means for simultaneously shifting said short shafts to bring said finishing tools into operative relation to the work and to fix the sprockets thereon.

In testimony whereof,- I have hereunto affixed my signature in the presence of two DANIEL SCHULTZ. Witnesses Gno. L. WALKER, MABEL SHULTZ.

Gopies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents,

' Washington, D. 0. 

